In computing, Java XML APIs were developed by Sun Microsystems, consisting separate computer programming application programming interfaces (APIs).^[1]

• Java API for XML Processing (JAXP)^[2][3][4]
• Java API for XML Messaging (JAXM)
• Jakarta XML RPC (JAX-RPC) — formerly Java API for XML Based RPC deprecated for Java API for XML Web Services
• Jakarta XML Registries (JAXR) — formerly Java API for XML Registries
• Jakarta XML Web Services (JAX-WS) — formerly Java API for XML Web Services
• Jakarta RESTful Web Services (JAX-RS) — formerly Java API for RESTful Web Services
• Java API for XQuery (XQJ)
• Jakarta XML Binding (JAXB) — formerly Java Architecture for XML Binding (this was its official Sun name, even though it is an API, see )
• StAX (Streaming XML processing) — compatible with JDK 1.4 and above, included in JDK 1.6

Only the Java API for XML Processing (JAXP) is a required API in Enterprise Java Beans Specification 1.3.

A number of different open-source software packages implement these APIs:

• Apache Xerces — One of the original and most popular SAX and DOM parsers
• Apache Xalan — XSLT/XPath implementation, included in JDK 1.4 and above as the default transformer (XSLT 1.0)
• Saxon XSLT — alternative highly specification-compliant XSLT/XPath/XQuery processor (supports both XSLT 1.0 and 2.0)
• Woodstox — An open-source StAX and SAX (as of version 3.2) implementation

• StelsXML JDBC driver - JDBC driver for XML files.
• Woodstox - Woodstox home page.
• How To Schema Check Xml Via JAXB - Rob Austin
• Java EE and web framework tutorials Archived 2012-04-12 at the Wayback Machine - Learning xml in java.